Triggering Circuits for SCR with Power Supply Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12895
Indian Lab Suppliers supplies the Triggering Circuits for SCR with Power Supply (Product ID: 12895) as part of its electronics engineering lab equipment range. It compares the three basic ways of firing an SCR, resistance, RC and UJT triggering, and applies them in half-wave and full-wave controlled rectifiers.
Quick Answer
Students start with R triggering, where firing can be delayed by no more than 90°, move to RC triggering for a wider range, and then use a UJT relaxation oscillator coupled through a 1:1 pulse transformer for sharp, isolated gate pulses. The same circuits are then used to build half-wave and full-wave controlled rectifiers with the two SCRs. A 35 V AC, 100 mA supply and a bridge rectifier provide the working voltages; separate potentiometers set the SCR and UJT firing angles, and two more vary the load. The board runs from 230 V ±10%, 50 Hz mains.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiments | R, RC and UJT triggering; half-wave and full-wave controlled rectifiers |
| Devices | 2 SCRs; UJT; pulse transformer 1:1 |
| Supply | 35 V AC, 100 mA; bridge rectifier |
| Controls | SCR and UJT firing-angle potentiometers; 2 load potentiometers |
| Mains | 230 V ±10%, 50 Hz; ON/OFF switch, fuse and indicator lamp |
| Connections | 4 mm stackable patch cords, 0.5 m |
Where This Is Used
A starting board for thyristor labs, followed by the Study of UJT and UJT Relaxation Oscillator with Power Supply (Product ID: 12879) and the UJT Firing Circuit of SCR with Power Supply (Product ID: 12911). An oscilloscope is needed to view gate and load waveforms. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
Which triggering method gives the widest control?
UJT triggering, which also gives sharp pulses with isolation.
What limits R triggering?
Firing can be delayed only up to 90° of the supply cycle.
How many SCRs are fitted?
Two.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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